Brake and attachment therefor.



W. L. GRANGER.

BRAKE AND ATTACHMENT THEREFOR. APPLIGATION FILED IEB.21,"1918.

1,080,213, T Patented Dec.2, 1913.

H 6 i; In!

Tiq-a flii iz'am L. Granger.

: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA c.

T OFFTC I WILLIAM L. GRANGER, OF WATSONVILLE, CALIFORNIA.

BRAKE AND ATTACHMENT THEREFOR.

Specification of Letters Patent.

Application filed February 21, 1913.

Patented Dec. 2,1913.

Serial No. 749,935.

To all whom it may concern Be it known that I, \VILLIAM L. GRAN- GER, a citizen of the United States, residing at Watsonville, in the county of Santa Cruz and State of California, have invented certain new and useful Improvements in Brakes and Attachments Therefor; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention comprehends improve ments in brakes adapted for use in connection with printing presses and similar machines and has for its primary object the provision of means whereby when the brake is applied to the fly-wheel of the machine, an electric circuit will be broken.

Another and more specific object of the invention resides in the provision of novelly formed contacts one of which is carried upon the brake, and novel means for bolding the brake in contact with the fly-wheel of a machine.

With these and other objects in view, as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination, and arrangement of parts, as will be hereinafter described and claimed.

For a complete understanding of my in vention, reference is to be had to the following description and accompanying drawings, in which,

Figure 1 is a side elevation of my device, the brake being shown in engagement with a fly-wheel, Fig. 2 is a top plan view of my improved brake, showing the support therefor, Fig. 3 is a transverse sectional view taken on the plane of line 3-3 of Fig. 1, and, Fig. 4 is a top plan view of one of the contact members.

Referring in detail to the drawings by numerals, 1 designates a portion of a flywheel which may constitute a part of a printing press or other machine driven by electric power. 2 designates,'generally, a brake which is adapted to be forced into engagement with the periphery of the flywheel to stop the machine. The brake is pivotally secured intermediate its ends between a pair of ears 3 formed upon a suitable base 1. The brake comprises a lever 5 curved at one end to conform to the curvature of the fly-wheel 1 and formed with a lateral off-set portion 6 adjacent said curved end. A suitable facing 7 is secured to this off-set portion for engagement with the periphery of the flywheel. The brake lever is suitably enlarged at its other end, as indicated at 8, to enable pressure to be conveniently applied thereto.

A block 9 is secured to that side of the lever which is opposed to the base and a contact member comprising a plate 10, sleeve 11, and binding screw 12, is secured thereto. A block 13 is mounted upon the base and has secured thereto a contact member comprising a plate 1A, sleeve 15, and binding screw 16. It will be noted upon reference to Fig. 1, that the sleeves 11 and 16 are formed adjacent the outer edge of the plates and extend in opposite directions so that said plates may contact with each other when the lever is disengaged from the flywheel. A current conducting wire is adapted to be secured to each of the contact members in such a manner that when said members are disengaged from each other the circuit will be broken.

The brake is held in contact with the flywheel by means of a latch 17, said latch being formed of a continuous strip of fiat metal bent intermediate its ends to provide the arms 18 and 19. The metal is curved adjacent the inner ends of these arms to form a sleeve 20 through which a pivotal COI1I1C tion 21 passes. The connection 21 is secured at its ends within a casing 22, said casing being U-shaped in cross section and open at each end. The free end of the arm 19 has a hook 23 formed thereon for engagement with one side of the brake lever 5, at which time the facing 7 is held in engagement with the fly-wheel. To hold the hook 23 in engagement with the brake lever, I provide a spring 24 which is secured within a casing 22 and which bears against the free end of the arm 18. A fiat metal spring 25 holds the contact members in engagement with each other when the hook 23 is disengaged from the brake lever. A wear plate 26 is mounted upon the brake lever 5 and engages the hook 23 when the contact plates are in engagement with each other.

From the foregoing description in connection with the accompanying drawings, it will be seen that I have provided a brake and means therefor of such construction that the act of forcing said brake against the fly-wheel of a machine will serve to break an electrical circuit so that the power will be shut off.

It is to be understood that while I have shown and described the preferred embodiment of my invention, I do not Wish to be limited to this exact construction, combination, and arrangement of parts, but may make such changes as Will fall within the spirit and scope of the invention.

Having thus described my invention, what I claim is The combination with a base and a brake lever pivotally supported thereon, of means for holding one end of said brake lever in contact With said base, said means comprising a casing open at both ends and U-shaped in cross section, a latch pivotally secure-"l within said casing, said latch being formed of a continuous strip of metal bent to form a pair of arms, a hook formed upon one of said arms for locking engagement with the brake lever, and spring means for holding said hook in looking engagement with the brake lever.

In testimony whereof I afiix my signature in presence of two Witnesses.

WILLIAM L. GRANGER. Witnesses:

E. M. BARBOUR, A. BARBOUR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

